MyRecorder(仿微信，录制音频并发送功能)
①布局实现(activity_main.xml) 布局采用线性布局，上面使用的一个ListView,下面使用的是一个自定义的Button(会在下面进行介绍)
<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" tools:context="com.yitong.myrecorder.MainActivity"> <ListView android:id="@+id/main_listview" android:layout_width="match_parent" android:layout_height="0dp" android:layout_weight="1" android:background="#ebebeb" android:dividerHeight="10dp" android:divider="@null" /> <FrameLayout android:layout_width="match_parent" android:layout_height="wrap_content" android:background="#fff"> <com.yitong.myrecorder.view.AudioRecorderButton android:id="@+id/main_btn" android:layout_width="match_parent" android:layout_height="wrap_content" android:gravity="center" android:layout_marginTop="6dp" android:layout_marginBottom="6dp" android:layout_marginLeft="60dp" android:layout_marginRight="60dp" android:minHeight="0dp" android:padding="6dp" android:text="@string/str_recoder_normal" android:textSize="20sp" android:textColor="#727272" android:background="@drawable/btn_recorder_normal" /> <View android:layout_width="match_parent" android:layout_height="1dp" android:background="#ccc"/> </FrameLayout></LinearLayout>
相关使用的string值(需要添加到value/string中)：
<string name="str_recoder_normal">按住说话</string> <string name="str_recorder_recording">松开结束</string> <string name="str_recorder_want_cancel">松开手指，取消发送</string> <string name="str_dialog_want_cancel">手指上滑，取消发送</string> <string name="str_dialog_want_send">手指上滑，取消发送</string> <string name="str_dialog_time_short">录音时间过短</string>
②我们分析一下自定Button的几种状态： 1.正常状态 (在初次显示，即没有点击的时候显示的状态，显示的文本为“按住说话”) 2.录音状态 (当手指按在Button上时，即为录音状态，显示的文本为“松开结束”) 3.取消状态 (当手指上滑，此时若松开手指，便取消发送，即为取消状态，显示的文本为“松开手指，取消发送”)
③当录音状态时，在View上有一个Dialog的提示，首先我们先自定义这个Dialog的布局：
<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="wrap_content" android:layout_height="wrap_content" android:background="@drawable/dialog_bg" android:orientation="vertical" android:padding="20dp"> <LinearLayout android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="center_horizontal" android:orientation="horizontal"> <ImageView android:id="@+id/main_recorder_dialog_icon" android:layout_width="wrap_content" android:layout_height="wrap_content" android:src="@mipmap/recorder" android:visibility="visible"/> <ImageView android:id="@+id/main_recorder_dialog_voice" android:layout_width="wrap_content" android:layout_height="wrap_content" android:src="@mipmap/v1" android:visibility="visible"/> </LinearLayout> <TextView android:id="@+id/main_recorder_dialog_label" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="center_horizontal" android:layout_marginTop="5dp" android:text="@string/str_dialog_want_cancel" android:textColor="#fff" android:textSize="20sp"/></LinearLayout>
其中用到的@drawable/dialog_bg即为自定的shape
<?xml version="1.0" encoding="utf-8"?> <shape xmlns:android="http://schemas.android.com/apk/res/android" android:shape="rectangle"> <corners android:radius="12dp"/> <solid android:color="#a3d7f5"/> <stroke android:width="1dp" android:color="#9b9b9b"/> </shape>
④定义DialogManager,便于对这个自定义布局的Dialog进行操作
public class DialogManager { private static final String TAG = "DialogManager"; private Dialog mDialog; private ImageView mIcon; private ImageView mVoice; private TextView mLabel; private Context mContext; public DialogManager(Context mContext) { this.mContext = mContext; } /** * 显示对话框 */ public void showRecordeingDialog() { mDialog = new Dialog(mContext, R.style.Theme_AudioDialog); LayoutInflater inflater = (LayoutInflater) mContext.getSystemService(mContext.LAYOUT_INFLATER_SERVICE); View view = inflater.inflate(R.layout.dialog, null); mDialog.setContentView(view); mIcon = (ImageView) mDialog.findViewById(R.id.main_recorder_dialog_icon); mVoice = (ImageView) mDialog.findViewById(R.id.main_recorder_dialog_voice); mLabel = (TextView) mDialog.findViewById(R.id.main_recorder_dialog_label); mDialog.show(); } /** * 正在录制提示 */ public void recording() { if (mDialog != null && mDialog.isShowing()) { mIcon.setVisibility(View.VISIBLE); mVoice.setVisibility(View.VISIBLE); mLabel.setVisibility(View.VISIBLE); mIcon.setImageResource(R.mipmap.recorder); mLabel.setText(R.string.str_dialog_want_send); } } /** * 取消录制对话框提示 */ public void wantToCancel() { if (mDialog != null && mDialog.isShowing()) { mIcon.setVisibility(View.VISIBLE); mVoice.setVisibility(View.VISIBLE); mLabel.setVisibility(View.VISIBLE); mIcon.setImageResource(R.mipmap.recorder); mLabel.setText(R.string.str_recorder_want_cancel); } } /** * 录音时间过短提示 */ public void tooShort() { if (mDialog != null && mDialog.isShowing()) { mIcon.setVisibility(View.VISIBLE); mVoice.setVisibility(View.VISIBLE); mLabel.setVisibility(View.VISIBLE); mIcon.setImageResource(R.mipmap.recorder); mLabel.setText(R.string.str_dialog_time_short); } } /** * 取消对话框 */ public void dismissDialog() { if (mDialog != null && mDialog.isShowing()) { mDialog.dismiss(); mDialog = null; } } /** * 显示音量大小 */ public void updateVoiceLevel(int level) { if (mDialog != null && mDialog.isShowing()) { int resId = mContext.getResources().getIdentifier("v" + level, "mipmap", mContext.getPackageName()); mVoice.setImageResource(resId); } }}
Dialog的样式Theme_AudioDialog,需要在values/styles.xml中定义
<style name="Theme_AudioDialog"> <item name="android:windowBackground">@android:color/transparent</item> <item name="android:windowFrame">@null</item> <item name="android:windowIsFloating">true</item> <item name="android:windowIsTranslucent">true</item> <item name="android:backgroundDimEnabled">false</item> </style>
⑤当手指按住Button时，便开始录音，所以我们还需要定义一个录音的管理类AudioManager来控制录制状态。
public class AudioManager { private MediaRecorder mMediaRecorder; private String mDir;// 保存的目录 private String mCurrentFilePath;// 保存音频文件的全路径 private boolean isPrepared = false;// 是否准备完毕 private AudioManager(String dir) { mDir = dir; } private static AudioManager mInstance; public static AudioManager getmInstance(String mDir) { if (mInstance == null) { synchronized (AudioManager.class) { if (mInstance == null) { mInstance = new AudioManager(mDir); } } } return mInstance; } /** * 准备完毕的回调 */ public interface AudioStateListener { void wellPrepared(); } private AudioStateListener mListener; public void setAudioStateListener(AudioStateListener listener) { mListener = listener; } /** 准备录制 */ public void prepareAudio() { try { isPrepared = false; File dir = new File(mDir); if (!dir.exists()) { dir.mkdirs(); } String fileName = generateName(); File file = new File(dir, fileName); mCurrentFilePath = file.getAbsolutePath(); mMediaRecorder = new MediaRecorder(); // 设置输出文件 mMediaRecorder.setOutputFile(mCurrentFilePath); // 设置音频源为麦克风 mMediaRecorder.setAudioSource(MediaRecorder.AudioSource.MIC); // 设置音频格式 mMediaRecorder.setOutputFormat(MediaRecorder.OutputFormat.RAW_AMR); // 设置音频编码 mMediaRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB); mMediaRecorder.prepare(); mMediaRecorder.start(); isPrepared = true; if (mListener != null) { mListener.wellPrepared(); } } catch (Exception e) { e.printStackTrace(); } } /** 获取音量大小 */ public int getVoiceLevel(int maxLevel) { if (isPrepared) { try { //mMediaRecorder.getMaxAmplitude() 1-32767 //注意此处mMediaRecorder.getMaxAmplitude 只能取一次，如果前面取了一次，后边再取就为0了 return ((mMediaRecorder.getMaxAmplitude() * maxLevel) / 32768) + 1; } catch (Exception e) { } } return 1; } /** 保存录音，释放资源 */ public void release() { if(mMediaRecorder != null) { mMediaRecorder.stop(); mMediaRecorder.release(); mMediaRecorder = null; } } /** 取消录制 */ public void cancel() { release(); if(mCurrentFilePath != null) { File file = new File(mCurrentFilePath); if(file.exists()) { file.delete(); mCurrentFilePath = null; } } } /** 获取录制音频的总路径 */ public String getmCurrentFilePath(){ return mCurrentFilePath; } /** * 生成一个随机名字 */ private String generateName() { return UUID.randomUUID().toString() + ".mp3"; }}
⑥处理完DialogManager和AudioManger后，接着我们回到自定义的Button，即AudioRecorderButton
public class AudioRecorderButton extends Button implements AudioManager.AudioStateListener { private static final int STATE_NORMAL = 1;//正常状态 private static final int STATE_RECORDING = 2;//录音状态 private static final int STATE_WANT_TO_CANCEL = 3;//取消状态 private static final String TAG = "AudioRecorderButton"; private int mCurState = STATE_NORMAL;//当前状态 private boolean isRecording = false;//是否正在录音 private DialogManager mDialogManger; private AudioManager mAudioManager; private boolean mReady = false;//是否触发longClick private float mTime;//计时 public AudioRecorderButton(Context context) { this(context, null); } public AudioRecorderButton(Context context, AttributeSet attrs) { this(context, attrs, 0); } public AudioRecorderButton(Context context, AttributeSet attrs, int defStyleAttr) { super(context, attrs, defStyleAttr); mDialogManger = new DialogManager(getContext()); String dir = Environment.getExternalStorageDirectory() + "/my_recorder_audios"; mAudioManager = AudioManager.getmInstance(dir); mAudioManager.setAudioStateListener(this); setOnLongClickListener(new OnLongClickListener() { @Override public boolean onLongClick(View v) { mReady = true; mAudioManager.prepareAudio(); return false; } }); } @Override public boolean onTouchEvent(MotionEvent event) { int x = (int) event.getX(); int y = (int) event.getY(); switch (event.getAction()) { case MotionEvent.ACTION_DOWN: changeSate(STATE_RECORDING); break; case MotionEvent.ACTION_MOVE: if (isRecording) { if (isCancelRecorder(x, y)) { changeSate(STATE_WANT_TO_CANCEL); } else { changeSate(STATE_RECORDING); } } break; case MotionEvent.ACTION_UP: if (!mReady) { reset(); return super.onTouchEvent(event); } if (!isRecording || mTime < 0.6f) { mDialogManger.tooShort(); mAudioManager.cancel(); mHandler.sendEmptyMessageDelayed(MSG_LODING_DISMISS, 1000); } else if (mCurState == STATE_RECORDING) {//正常录制结束 mDialogManger.dismissDialog(); mAudioManager.release(); if (mListener != null) { mListener.onFinish(mTime, mAudioManager.getmCurrentFilePath()); } } else if (mCurState == STATE_WANT_TO_CANCEL) { mDialogManger.dismissDialog(); mAudioManager.cancel(); } reset(); break; } return super.onTouchEvent(event); } /** * 根据不同状态，更改不同的文字和显示的背景 */ private void changeSate(int stateRecording) { if (mCurState != stateRecording) { mCurState = stateRecording; switch (mCurState) { case STATE_NORMAL: setBackgroundResource(R.drawable.btn_recorder_normal); setText(R.string.str_recoder_normal); break; case STATE_RECORDING: setBackgroundResource(R.drawable.btn_recording); setText(R.string.str_recorder_recording); if (isRecording) { mDialogManger.recording(); } break; case STATE_WANT_TO_CANCEL: setBackgroundResource(R.drawable.btn_recording); setText(R.string.str_recorder_want_cancel); mDialogManger.wantToCancel(); break; } } } /** * 根据移动后的位置，判断是否取消录音 */ private boolean isCancelRecorder(int x, int y) { if (x < 0 || x > getWidth() || y < 0 || y > getHeight()) { return true; } return false; } /** * 重置标识位 */ private void reset() { changeSate(STATE_NORMAL); isRecording = false; mReady = false; mTime = 0; } /** * 开始播放时回调此方法 */ @Override public void wellPrepared() { mHandler.sendEmptyMessage(MSG_AUDIO_PREPARED); } private static final int MSG_AUDIO_PREPARED = 0x110; private static final int MSG_VOICE_CHAGE = 0x111; private static final int MSG_LODING_DISMISS = 0x112; private Handler mHandler = new Handler() { @Override public void handleMessage(Message msg) { super.handleMessage(msg); switch (msg.what) { case MSG_AUDIO_PREPARED: mDialogManger.showRecordeingDialog(); isRecording = true; new Thread(mGetVoiceLevelRunnable).start(); break; case MSG_VOICE_CHAGE: mDialogManger.updateVoiceLevel(mAudioManager.getVoiceLevel(7)); break; case MSG_LODING_DISMISS: mDialogManger.dismissDialog(); break; } } }; /** * 获取音量大小，并计时 */ private Runnable mGetVoiceLevelRunnable = new Runnable() { @Override public void run() { while (isRecording) { SystemClock.sleep(100); mTime += 0.1f; mHandler.sendEmptyMessage(MSG_VOICE_CHAGE); } } }; /** * 完成录制后的回调接口 */ public interface AudioFinishRecorderListener { void onFinish(float time, String filePath); } private AudioFinishRecorderListener mListener; public void setAudioFinishRecorderListener(AudioFinishRecorderListener listener) { mListener = listener; }}
=====================至此自定义Button就定义完===================================
①接着我们回到了MainActivity,我们需要获取ListView和AudioRecorderButton组件。对于ListView,需要定义Adapter,当点击某个条目的需要把录制的音频播放出来，需要定义一个MediaManager来控制音频的播放。
②首先我们先定义RecorderAdapter
/** * 音频实体类，包含音频的长度和保存的路径 */public class Recorder implements Serializable { private int time; private String filePath; public Recorder() { } public Recorder(int time, String filePath) { this.time = time; this.filePath = filePath; } public void setTime(int time) { this.time = time; } public void setFilePath(String filePath) { this.filePath = filePath; } public float getTime() { return time; } public String getFilePath() { return filePath; }}/** * 继承ArrayAdater,重写getView方法 */public class RecorderAdapter extends ArrayAdapter<Recorder> { private List<Recorder> mDatas; private Context mContext; private LayoutInflater mInfalter; private int mMinItemWidhth; private int mMaxItemWidhth; public RecorderAdapter(Context context, List<Recorder> datas) { super(context, -1, datas); mDatas = datas; mContext = context; mInfalter = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE); WindowManager wm = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE); DisplayMetrics outMetrics = new DisplayMetrics(); wm.getDefaultDisplay().getMetrics(outMetrics); mMaxItemWidhth = (int) (outMetrics.widthPixels * 0.7f); mMinItemWidhth = (int) (outMetrics.widthPixels * 0.15f); } @Override public View getView(int position, View convertView, ViewGroup parent) { ViewHolder holder = new ViewHolder(); if(convertView == null) { convertView = mInfalter.inflate(R.layout.item_recorder, null); } holder = holder.getHolder(convertView); holder.setView(holder, mDatas.get(position)); return convertView; } private class ViewHolder{ TextView time; View length; public ViewHolder getHolder(View view){ ViewHolder holder = (ViewHolder) view.getTag(); if(holder == null) { holder = new ViewHolder(); } holder.time = (TextView) view.findViewById(R.id.item_recorder_time); holder.length = view.findViewById(R.id.item_recorder_length); view.setTag(holder); return holder; } public void setView(ViewHolder holder, Recorder recorder) { holder.time.setText(recorder.getTime() + "\""); ViewGroup.LayoutParams layoutParams = holder.length.getLayoutParams(); layoutParams.width = (int) (mMinItemWidhth + (mMaxItemWidhth / 60f * recorder.getTime())); } }}
③定义MediaManger,用于播放音频
public class MediaManager { private static MediaPlayer mMediaPlayer; private static boolean isPause = false;//是否是暂停 /** * 播放音频 */ public static void playSound(String filePath, MediaPlayer.OnCompletionListener onCompletionListener) { if (mMediaPlayer == null) { mMediaPlayer = new MediaPlayer(); mMediaPlayer.setOnErrorListener(new MediaPlayer.OnErrorListener() { @Override public boolean onError(MediaPlayer mp, int what, int extra) { mMediaPlayer.reset(); return false; } }); } else { mMediaPlayer.reset(); } try { mMediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC); mMediaPlayer.setOnCompletionListener(onCompletionListener); mMediaPlayer.setDataSource(filePath); mMediaPlayer.prepare(); mMediaPlayer.start(); } catch (Exception e) { e.printStackTrace(); } } /** * 暂停 */ public static void pause() { if (mMediaPlayer != null && mMediaPlayer.isPlaying()) { mMediaPlayer.pause(); isPause = true; } } /** * 继续 */ public static void resume() { if (mMediaPlayer != null && isPause) { mMediaPlayer.start(); isPause = false; } } /** * 释放资源 */ public static void release() { if (mMediaPlayer != null) { mMediaPlayer.release(); mMediaPlayer = null; } }}
④MainActivity的实现
public class MainActivity extends AppCompatActivity { private static final String TAG = "MainActivity"; private List<Recorder> mDatas = new ArrayList<Recorder>(); private AudioRecorderButton mAudioRecorderButton; private ListView mListView; private RecorderAdapter mAdapter; private View mAnimView; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); initView(); initAction(); } private void initView() { mAudioRecorderButton = (AudioRecorderButton) findViewById(R.id.main_btn); mListView = (ListView) findViewById(R.id.main_listview); } private void initAction() { mAudioRecorderButton.setAudioFinishRecorderListener(new AudioRecorderButton.AudioFinishRecorderListener() { @Override public void onFinish(float time, String filePath) { Recorder recorder = new Recorder((int)time, filePath); mDatas.add(recorder); mAdapter.notifyDataSetChanged(); mListView.setSelection(mDatas.size() - 1); } }); mAdapter = new RecorderAdapter(this, mDatas); mListView.setAdapter(mAdapter); mListView.setOnItemClickListener(new AdapterView.OnItemClickListener() { @Override public void onItemClick(AdapterView<?> parent, View view, int position, long id) { // 播放帧动画 mAnimView = view.findViewById(R.id.item_anim); mAnimView.setBackgroundResource(R.drawable.play_anim); AnimationDrawable anim = (AnimationDrawable) mAnimView.getBackground(); anim.start(); // 播放音频 MediaManager.playSound(mDatas.get(position).getFilePath(), new MediaPlayer.OnCompletionListener() { @Override public void onCompletion(MediaPlayer mp) { mAnimView.setBackgroundResource(R.mipmap.adj); } }); } }); } @Override protected void onPause() { super.onPause(); MediaManager.pause(); } @Override protected void onResume() { super.onResume(); MediaManager.resume(); } @Override protected void onDestroy() { super.onDestroy(); MediaManager.release(); }}
帧动画play_anim定义在drawable下
<?xml version="1.0" encoding="utf-8"?> <animation-list xmlns:android="http://schemas.android.com/apk/res/android" > <item android:drawable="@mipmap/v_anim1" android:duration="300"/> <item android:drawable="@mipmap/v_anim2" android:duration="300"/> <item android:drawable="@mipmap/v_anim3" android:duration="300"/> </animation-list>
⑤最后，不要忘了添加权限
<uses-permission android:name="android.permission.RECORD_AUDIO"/><uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/><uses-permission android:name="android.permission.MOUNT_UNMOUNT_FILESYSTEMS"/>
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。
去了不同的地方，看了不同的风景，知道了不同的事，
